while out cycling today on my mountain bike i had to ride up a short sharp hill which caught me out. i didnt have chance to change gear so tried powering up,within a few seconds i had pain in both legs just above my knee's on the inside of my legs.the pain was so intense it stopped me in my tracks, i could hardly stand let alone ride. i had been riding for about 2 hours, and ride regularly. the pain eased after about 2 mins, but happened again later while relaxing at home